Add --version arg to vx (#5646)

Author: palaska

vortex-tui/src/main.rs

@@ -23,6 +23,7 @@ use vortex::session::VortexSession;
 use crate::inspect::InspectArgs;
 
 #[derive(clap::Parser)]
+#[command(version)]
 struct Cli {
     #[clap(subcommand)]
     command: Commands,